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Finding the Fourth Proportional to 139,474.85, 192,468.96 and 79,041.96

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Solution

The fourth proportional to 139,474.85, 192,468.96 and 79,041.96 is: 109,074.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,474.85 : 192,468.96 = 79,041.96 : x
  2. Step 2: Convert to fraction form
    139,474.85/192,468.96 = 79,041.96/x
  3. Step 3: Cross multiply
    139,474.85x = 192,468.96 × 79,041.96
  4. Step 4: Simplify right side
    139,474.85x = 15,213,123,837.56
  5. Step 5: Solve for x
    x = 15,213,123,837.56/139,474.85
  6. Step 6: Final answer
    x = 109,074.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.